import unittest

class DemoTestCase(unittest.TestCase):
    # TODO 前--大钳子
    @classmethod
    def setUpclass(cls) -> None:
        print('setUpclass')

    # TODO 前小夹子
    def setUp(self) -> None:
        print('setUp')

    # TODO 后小夹子
    def tearDown(self) -> None:
        print('tearDown')

    def test01(self):
        print('test01')

    def test02(self):
        print('test02')

    def test03(self):
        print('test03')

    # TODO 后--大钳子
    @classmethod
    def tearDownClass(cls) -> None:
        print('tearDownClass')

if __name__ == '__main__':
    unittest.main(verbosity=2)